<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <!-- 挂载点 -->
    <div id="app">
      <h1>{{ msg }}</h1>
    </div>

    <!-- 引入 vue 类库 -->
    <script src="https://unpkg.com/vue@3"></script>

    <script>
      const { createApp } = Vue;

      const app = createApp({
        data() {
          return {
            msg: "张三",
          };
        },
      });
      app.mount("#app");
    </script>
  </body>
</html>
